Road-bed for railways



Patenten Mar. 2|, |899. G. F. GREENWUUD. RoAu BED F03A nAlLwAv's'.

` (Application tiled Nov. 6, 1898.)

No Model.)

WWNESSES MWA/'l Pa-tented Mar. 2|,r |899. G. F. GREENwuoD. nnAn BED FonRAlLwA'vs.

(Application led No'v. 5, 189B.)

(No Model.)

WITNESSES me Nunms PErEns cm Pauw-umu., msnwcmm ov a INITED STATESvPATENT OFFICE.

GII-Y F. GREENWOOD, OF PITTSBURG, PENNSYLVANIA.

ROAD-BED FOR RAILWAYS.'

SPECIFICATION formngpart of Letters Patent No. 621,657, dated March 21,1899. Application iiled November 5, 1898. Serial No. 695,535. (Nomodel.)

T0 all whom it may concern:

Beit known that I, GUY F. GREENWOOD, of Pittsburg, in the county ofAlleghenyand State of Pennsylvania, have invented a new and usefulImprovement in Road-Beds for Railways, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings,'forming part of this specication, in Which- Figure l shows invertical cross-section a road-bed for electric railways embodying myinvention applied to a stone-block pavement.

Fig.'2 is a like view showing the same applied to an asphalt pavement.Fig. 3 vis a like view showing it applied t0 a macadam pavement, andFig. 4 is a cross-sectional view showing the invention applied to theroad-bed of a steam-railway.

My invention consists in a road-bedfor railways comprising a trough madeof concrete adapted to contain within it the ballast and ties onwhichtherails are set. Such trough not only retains the ballast andprevents it from being displaced laterallyor vertically, and thuscausing the rails and ties to sink, but it maintains the rails level andin alinement by bridging over soft spots that occur in the earth or subroadway and distributes over a large area the weight that comes upon therails. It also enables the road-bed to be kept dry and water'to be drawnfrom around-the ties. It provides also a very durable structure andenables the rails and ties to be renewedat a minimum expense and withoutwaste of ballast.

In Fig. l, 2 represents the trough, which is made of concrete andextends along the railway, inclosin g within it the ballast 3 and theties 4.

5 5 are the rails, and 6 is the pavement.

For the purpose of drainage I may at intervals provide pipes 7,connecting with a sewer S, toward which' the bottom of the trough issloped, and I show in Fig. 1 a manholeebox 9, by which access isafforded to the 'my hand.

pipe. In this way water can be drained 0E from the ballast and theinterior of the trough kept dry.

In Fig. lfI show the trough made of step form, thedeeper middle portionbeing adapted to contain the ties and the outer portion to contain thepavement.

In Fig. 2 I show a trough made Without such stepped construction andadapted merely to hold the ballast around the ties. The drain 7 of Fig.2-is also different in form from that of Fig'. l, and Ishowller-'pi'eces l0', of terracotta or other suitable material, applied tothe sidesof the rails to exclude the ballast. The pavement in` Fig. 2 isan asphalt pavement.

In Fig. 3 I show my invention adapted for a macadam pavement, and Iillustrate the drain-pipe 7 as Abeing situated at the side of thetrough, with the bottom of the trough sloping toward it. l1 1l arel llerblocks or pieces at the inner sides of the rails.

In Fig. 4 I show my improvement applied to the road-bed of asteam-railway, the ties in'this case being at the Surface of the ground.

Other modifications than those illustrated above will occur within thescope of my invention to those skilledin the art, since What I claimis- 1. A road-bed for railways, comprising a trough extending'along theroadway and containing the ballast, and ties o r rail-supports vset inthe ballast within said trough, substantially as described.

2. A road-bed for railways, comprising a concrete trough extending alongthe roadway and containing the ballast, and ties or railsupports set inthe ballast within and between the sides ofsaid trough, substantially asdescribed.

In testimony whereof I have hereunto set GUY F. GREENWOOD. Witnesses:

H. M. CORWIN,

G. B. BLEMMING.

